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I created templates for Visual Studio in the version Ultimate, but for some reasons I needed to migrate to the Visual Studio Professional, and since then my projects VSIX no longer work.
The extensions to download on visualstudiogallery.msdn.microsoft.com when installed in the VS Premium "cannot be installed in this version of the application".
So, is there any way to manipulate VSIX projects in Visual Studio Professional, without being on hand or using VS Ultimate?